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<br /> Groundwater Monitoring Data and Analytical Results
<br /> Former Unocal Service Station#2859 -
<br /> 1665 Pacific Avenue
<br /> Stockton California
<br /> Well ID! Date DTW GWE TPH(G) B T E x MTBE
<br /> TOC* (ft) (msl) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb)
<br /> MW-2 05/08/96 33 59 -23 51 180,000 1,900 46,000 4,200 25,000 ND
<br /> (cont) 08/07/96 3429 -2421 290,000 3,200 52 000 8,900 38,000 ND
<br /> 11/14/96 3441 -24 33 180,000 4,200 50,000 9,900 39,000 ND
<br /> 02/14/97 3070 -2062 110,000 1,500 29,000 4,100 20,000 ND
<br /> 05/07/97 2897 -1889 77,000 1 200 28,000 3,900 18,000 ND
<br /> 03/06/98 2697 -1689 80,000 780 15,000 3,000 14,000 3ND/ND 4
<br /> 06/18/98 2407 -13 99 90,000 1 600 19 000 4,400 21,000 3ND/214
<br /> 08/31/98 24 85 -1477 83,000 1,000 l2 000 4,000 18 000 3ND/ND 4
<br /> 12/04/98 2474 -1466 74,000 1,500 15,000 4,300 19,000 3ND/ND 4
<br /> 02/01/99 2423 -14 15 -- -- -- -- --
<br /> 02/04/99 2406 -13 98 50,000 2,200 23,000 4,100 22,000 --/ND4
<br /> 944 03/12/99 2325 -13 81 82,000 2,400 16,000 4,200 21,000 ND3
<br /> 05/24/99 2248 -1304 33,000 4,900 2,500 1,800 6,400 950
<br /> MW-3 06/06/88 -- -- 170 10 ND ND 16 --
<br /> 10/26/88 - -- 200 13 ND ND 15 --
<br /> 03/02/89 -- -- 120 1 1 ND 07 10 -
<br /> 08/28/89 -- -- 1,000 12 2 1 41 11 -
<br /> 11/30/89 -- - 360 2 1 1 4 84 17 --
<br /> 03/01/90 -- - 300 1 6 ND 3 6 64 -
<br /> 05/30/90 -- - 760 ND 90 7 1 76 -
<br /> 08/24/90 DRY -- -- - -- -- --
<br /> 11119/90 DRY -- -- - - -- --
<br /> 02/25/91 DRY - -- - - - --
<br /> 05/29/91 DRY -- - -- - -- -
<br /> 08/28/91 DRY -- - - - -- --
<br /> 01/04/00 DRY - - - -- - -- -
<br /> 03/04/92 DRY - - -- - -- -
<br /> 05/21/92 DRY - -- -- - - - -
<br /> 08/18/92 INACCESSIBLE - - -- - -- --
<br /> 11/13/92 DRY - - -- - --1060 03/26/93 DRY -- -- -- -- -- --
<br /> 06/04/93 4577 -35 17 1,600 260 120 34 97 -
<br /> 11/12/93 4700 -3640 1,700 300 78 70 160 -
<br /> 02/18/94 4505 -34 45 3,300 85 29 240 720 --
<br /> 05/23/94 43 84 -3324 2,300 84 16 200 540 --
<br /> 2859 x1s/280054 3 As of 05/24/99
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